bgelectric
Senior Member
I know the answer to this question but im still going to ask it, does wire that only runs vertically need to be derated. For example from a trough down to the panel in emt? because technically its not all bunched up on top of each other.
Also in the code book there is an exception for mc and ac without an outer sheathing about being derated I believe its some where in 310. Can somone expound on this I do not completely understand. thanks
Also in the code book there is an exception for mc and ac without an outer sheathing about being derated I believe its some where in 310. Can somone expound on this I do not completely understand. thanks